The association between treatment reactions and treatment efficiency of Hemoporfin-photodynamic therapy on port wine stains: A prospective double blind randomized controlled trial

HMME-PDT on PWS induces several treatment reactions, including pruritus, burning sensation, pain, swelling, blisters and scab. Two sessions of treatments do not have any accumulation effects on treatment reactions. And there might be a positive correlation between treatment efficiency and the severity of scab or pain (at early stage of the therapy), which might help in regulating treatment modalities.